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PATENTED MAR. l, 1904.

N W. GRANDALLi BELL.

APPLICATION FILED our. 29, 1903,

N0 MODEL.

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ATTORNEY UNITED STATES.

Patented March 1, 1904.

PATENT OFFICE.

NATHAN W. CRANDALL, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE RUSSELL &ERVVIN MFG. CO., OF NEW BRITAIN, CONNECTICUT, A CORPO- RATION OFCONNECTICUT.

BELL.

SPECIFICATION forming part of Letters Patent No. 753,369, dated March 1,1904.

Application filed October 29, 1903. Serial No. 179,020. (No model.)

To all whom it may concern:

Be it known that I, NATHAN W. CRANDALL, a

, citizen of the United States, residing at Meristroke.

den, in the county of New Haven, State of Connecticut,have inventedcertain new and useful Improvements in Bells, of which the following isa full, clear, and exact description.

My invention relates to improvements in bells, and particularly to amechanical construction which is to be operated by a pushbutton or thelike. i

The object of the invention is to construct abell mechanism of such aform that its manufacture may be economical and that it shall beefiicient and reliable in operation and easy to install.

The invention consists in mounting the bell upon a post and in using inconjunction with this post a spring-controlled operating mem berengaging with gears which operate the striking mechanism, so as to givea repeated an inspection of the accompanying sheet of drawings, 1n wh1chFigure 1 1s a cross-section and side elevation of a bell embodying theimprovements of i of the striker.

my invention attached to a support. Fig. 2 is a rear elevation ofthebell portion, together with the supporting-post. Fig. 3 is a detailshowing the supporting-post and operatinggears.

1 indicates the base, which is formed to correspond with the shape andsize of. the bell.

2 is the bell proper, and 3 is the supporting-post, which is screwedinto the base 1 and passes through a hole in the bell 2, where it isheld in place by the cap-nut 4.

The operating parts are centered and supported about the post 3 by meansof the frame 5, which is held in place against the inside of the bell bya shoulder on the post.

6 is a shaft which carries the spring-arm 7 8 is a' double-armed pawl orseesaw which is mounted on this shaft 6 and which gives to thestriker-arm a vibratory movement.

9 is a second shaft carried by the frame 5, which supports the two gears10 and 11 for The details will be understood from These two gears 10 and11 are formed simply as segments and preferably stamped out from onesheet of metal, the parts being united by the bar 12. These two gearsare loose on the shaft 9, but are held in their proper position by theengagement of the gear 11 in a slot in the post 3.

Cooperating with the post 3 is the plunger 13, which is adapted to bereciprocated and transmit motion to the gears. This plunger is formedwith annular ridges or teeth with indentations between them, so as tobe, in effect, a rack cylindrical in cross-section.

1a is a spring which holds the plunger in its position shownsubstantially as in Fig. 1.

The base of the bell is adapted-to be secured to a support, as 15,through which a button 16 of suitable construction passes forcooperationwith the plunger 13.

The parts may be easily disassembled by removing the cap-nut a or byremoving the bell and post 3 from the base 1.

The frame 5 is preferably of sheet metal and has the sides bent up intosuitable formation to support the. two shafts 6 and 9 and form bearingstherefor. It has an irregularshaped opening to seat the post 3.

The bell is operated by the reciprocation of the plunger 13, whichmovement is transmitted by the gears 10 and Hand causes'a rapidvibration of the striker-arm and hammer.

The bell will be seen to be compact and to contain all the operatingelements within itself. This adapts the bell particularly for generaluse in sale and ready installation.

What I claim is 1. A mechanism of. the character described comprising abell, a tubular post forming a support for said bell, a plunger in saidpost, a spring therefor, a striker, a gear projecting through a slot insaid post and engaging the reciprocating member, and a second gearformed integrally with said first gear for giving a vibratory motion tothe striker-arm.

2. A mechanism of the character described comprising a bell, atubularpost forming a support for said bell, a base for supporting said post,acap screw-threaded on the outer end of said post for holding the bellin place, said post being secured to the base by a screwthreadedportion, a vibratory striking device mounted Within said bell, areciprocating member inside of said post, a removable spring for saidmember held in place by said cap and means for connecting thereciprocating mem ber and the Vibratory device. 3. A bell, apost-support therefor, a vibratory striking device, a reciprocatingmember coacting with said post, and a pair of gears formed from anintegral piece of metal, one of said gears engaging said reciprocatingmember and the other of said gears engaging the striking device.

Signed at New Britain, Connecticut, this 27th day of October, 1903.

NATHAN W. CRANDALL.

Witnesses:

M. S. WIARD, F. E. SUNBURN.

